While not necessarily proof of the existence of the sole, such results are what one might see if the mined is separate from the brain. In such cases the brain may be all but gone but the person is still there but simply has a problem reaching out to the outside world. In such a case the person would seem largely unresponsive but might be able make small efforts such as moving eyelids that could be interpreted as reflexive.
However the statuesque in neuroscience is the totally naturalistic and so it is natural for them to dismiss any reaction of vegetative state patients as totally reflexive. On factor against this totally naturalistic view is evidence that synaptic activity requires quantum tunneling on demand that has a 1 in 10 million chance of happening such that the mind has to be independent of synaptic activity and capable of controlling it, suggesting the existence of the sole.